The Cockleshell Heroes

Operation Frankton was a commando raid on ships in the German occupied French port of Bordeaux in southwest France during World War II. The raid was carried out by a small unit of Royal Marines known as the Royal Marines Boom Patrol Detachment, part of Combined Operations inserted by HMS Tuna captained by Lieutenant-Commander Dick Raikes who, earlier, had been awarded the DSO for operations while in command of the submarine HMS Seawolf.

The plan was for six folding kayaks to be taken to the area of the Gironde estuary by submarine. Twelve men would then paddle by night to Bordeaux. On arrival they would attack the docked cargo ships with limpet mines and then escape overland to Spain.